CVE Explorer

CVE-2026-12940

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP (Model Context Protocol) stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUS_ENV_VARS blocklist fails to include SHELLOPTS , BASHOPTS , and PS4 environment variables.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b10c3dbacc3e5f643dcb042a0405b26a4f8fc9c0452cbf4caba8b636adf18855

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"cpes":["cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:langflow_oss:1.10.1:*:*:*:*:*:*:*"],"product":"Langflow OSS","vendor":"IBM","versions":[{"lessThanOrEqual":"1.10.1","status":"affected","version":"1.0.0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1a42b903629d7c77a79006231a0eb098828c6d7768931d7de20d327c84fad328 · sha256:cbeed0bcc2328635… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:1a42b903629d7c77a79006231a0eb098828c6d7768931d7de20d327c84fad328 · sha256:cbeed0bcc2328635… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:1a42b903629d7c77a79006231a0eb098828c6d7768931d7de20d327c84fad328 · sha256:cbeed0bcc2328635… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"tags":["vendor-advisory","patch"],"url":"https://www.ibm.com/support/pages/node/7279995"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1a42b903629d7c77a79006231a0eb098828c6d7768931d7de20d327c84fad328 · sha256:cbeed0bcc2328635… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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